Abstract: It is an object of the invention to provide a suspension system configured to execute a control for avoiding a state in which an operation of an electric motor which is a power source of an electromagnetic actuator is kept halted at a certain operational position while the motor is generating a motor force. Where a target rotational position of the motor becomes equal to a specific operational position (e.g., a rotational position at which an electrifying current amount of one phase reaches a peak value), a control for shifting the target rotational position by ?? is executed. Where the rotational position of the motor is kept located at the certain position for a time period longer than a prescribed time, a control for changing the rotational position of the motor is executed. According to the present suspension system, it is possible to suppress imbalance in heat generation in the motor and to thereby reduce a load to be applied to the motor. Accordingly, a suspension system with high utility is realized.

Abstract: A suspension device (S) as a solution for the problem of the present invention includes: an active suspension unit (U) equipped with a linear actuator (A) and a first fluid pressure damper (D1) connected to the actuator (A) to extend and retract in the same direction; and a second fluid pressure damper (D2) arranged in parallel with the active suspension unit (U).

Abstract: A suspension device (S) of the present invention includes: a member (11) coupled to one of a vehicle body and a vehicle axle; an outer cylinder (3) coupled to the other one of the vehicle body and the vehicle axle and disposed at the outer circumference of the member (11); and a bearing (4) that is interposed between the member (11) and the outer cylinder (3), the bearing (4) having balls (4a) that rollably contact at least one of the member (11) and the outer cylinder (3), and a ball case (4b) that retains the balls (4a) rollably.

Abstract: A pedal device is provided with an accelerator pedal pivotally mounted in a vehicle; and a damper disposed between the accelerator pedal and the vehicle. The depressing force as a depression degree of the accelerator pedal is deter mined by the damper according to the movement of the accelerator pedal. Thus, the pedal device does not use friction members which create abrasion and the function thereof is not impaired even if exchange and maintenance are not carried out over a long period of time. Therefore, maintenance frequency and cost of the pedal device can be reduced.

Abstract: A suspension system is provided to execute a control for avoiding a state in which an operation of an electric motor which is a power source of an electromagnetic actuator is kept halted at a certain operational position while the motor is generating a motor force. Where a target rotational position of the motor becomes equal to a specific operational position (e.g., a rotational position at which an electrifying current amount of one phase reaches a peak value), a control for shifting the target rotational position by ?? is executed. Where the rotational position of the motor is kept located at the certain position for a time period longer than a prescribed time, a control for changing the rotational position of the motor is executed.

Abstract: A damper is comprised of an actuator (A) connected to a sprung member (B) side of a vehicle, the actuator (A) including a motion converting mechanism (T) for transforming a linear motion into a rotational motion and a motor (M) to which the rotational motion resulting from the transformation by the motion converting mechanism (T) is transmitted; a hydraulic damper (E) including a cylinder (C), a piston (P) inserted slidably into the cylinder (C) and defining two pressure chambers within the cylinder (C), and a rod (R) connected at one end thereof to the piston (P), wherein a linear motion of the actuator (A) being transmitted to one of the rod (R) and the cylinder (C) while the other of the rod (R) and the cylinder (C) being connected to an unsprung member (W) side of the vehicle; and biasing means (1, 2, X, Y, Z) for biasing the hydraulic damper (E) in both compressing and extending directions.

Abstract: In a system including four electromagnetic absorbers for respective four vehicle wheels, motor coils of two respective electromagnetic absorbers disposed corresponding to two diagonally located wheels are connected forming a closed loop including the coils. A generated damping force magnitude can be made different between an instance directions of respective movements of the diagonally located two wheels with respect to the vehicle body are the same, and an instance the directions are opposite each other. Each electromagnetic absorber includes a resistor cooperating with the corresponding coil forming a closed loop, and selectively establishes: a connected state in which one of the four coils and any of the other three coils are connected to form a closed loop; and a non-connected state in which the one of the four coils is not connected to any other coil. An appropriate vibration suppressing action is exhibited with respect to a coupled motion.

Abstract: A suspension device (A) comprising a damper (S) and a gas spring (C), the damper (S) comprising a motion transforming mechanism (H) for transforming a relative motion between a vehicle body-side member and an axle-side member into a rotational motion and a motor (M) having a rotor (8) to which the rotational motion is transmitted, the gas spring (C) being interposed between the vehicle body-side member and the axle-side member, in which the motor (M) comprises a hollow casing (9), a partition wall member (16) which forms a rotor chamber (r) within the casing (9), with the rotor (8) being received within the rotor chamber (r), a cylindrical stator (17) disposed between an outer periphery of the partition wall member (16) and an inner periphery of the casing (9), and the rotor (8) held rotatably by the casing (9) within the rotor chamber (r), and the interior of the rotor chamber (6) is brought into communication with the interior of a gas chamber (R) of the gas spring (C).

Abstract: A suspension device (S) of the present invention comprises: an actuator (A) including a motion conversion mechanism (T) for converting a linear motion to a rotational motion, and a motor (M) connected to a rotational member (1) which performs the rotational motion in the motion conversion mechanism (T); a fluid pressure damper (D) connected to a linear motion member (2) which performs the linear motion in the motion conversion mechanism (T); a mount (22) connected to a sprung member of a vehicle; and suspension springs (38) and (38) interposed between the mount (22) and an unsprung member, the actuator (A) being elastically supported by the mount (22) through a rubber vibration isolator (21).

Abstract: A suspension system for a vehicle, including: an electromagnetic actuator configured to generate an actuator force and including a sprung-side unit supported by a sprung portion, an unsprung-side unit supported by an unsprung portion, a screw mechanism, and an electromagnetic motor; a connecting mechanism including a support spring for permitting one of the sprung-side and unsprung-side units to be floatingly supported as a floating unit by a unit-floatingly support portion that is one of the sprung and unsprung portions by which the floating unit is supported; and a controller including a sprung-vibration-damping control portion and a relative-vibration-damping control portion that is configured to execute a relative-vibration damping control for damping a vibration of the floating unit caused by the structure in which the floating unit is floatingly supported by the support spring.

Abstract: A suspension device (S) comprises: an actuator (A) including a motion conversion mechanism (T) for converting a linear motion to a rotational motion and a motor (M) connected to a rotary member (1) which performs the rotational motion in the motion conversion mechanism (T); a fluid pressure damper (D) connected to a linear motion member (2) which performs the linear motion in the motion conversion mechanism (T); an outer cylinder (27) connected to the actuator (A); and a bearing (34) attached to a rod (31) or a cylinder (32) connected to the linear motion member (2) of the fluid pressure damper (D) and slidably contacting with the inner circumference of the outer cylinder (27). This suspension device can improve reliability and vehicle ride quality.

Abstract: A suspension device (S) comprises: an actuator (A) including a motion conversion mechanism (T) for converting rotational motion of a screw nut (1) to linear motion of a threaded shaft (2), and a motor (M) connected to the screw nut (1); and a fluid pressure damper (D) connected to the threaded shaft (2), wherein the threaded shaft (2) is formed in a cylindrical shape, a connecting shaft (30) for connecting a rod (31) or a cylinder (32) of the fluid pressure damper (D) to the threaded shaft (2) is inserted into the threaded shaft (2), and the connecting shaft (30) is connected to an end, opposite to the fluid pressure damper, of the threaded shaft (2). Accordingly, the connection between the actuator and the hydraulic damper is facilitated.

Abstract: The present invention provides a motor (M) including a rotor (1), a stator (S) having a winding wire (2) wound thereon, and an outer cylinder (3) for holding the stator (S) fitted into the inner circumference thereof. The stator (S), the outer cylinder (3), and a terminal (4) having one end (4a) connected to the winding wire (2) are integrated together by a mold resin (12) by insert molding while closing one end side of the outer cylinder (3) by the mold resin (12), and protruding the other end (4b) of the terminal (4) out of the motor (M) through the mold resin (12).

Abstract: A ball screw nut, into which a ball screw shaft is screwed, is coupled with a first cylindrical member disposed in a periphery of the ball screw shaft so as not to rotate with each other. The ball screw nut and the first cylindrical member are rotatably supported on a second cylindrical member by way of balls arranged so as to form two rows. One end portion of the ball screw nut is spline-fitted with one end portion of the first cylindrical member. Two rows of ball bearing raceways are formed on an outer peripheral face of the ball screw nut.

Abstract: The present invention provides a motor (M) including a case (1) storing an armature (3) having a winding wire (2) wound thereon on the inner circumferential side, in which the case (1) includes an opening part (1a) for inserting a terminal (5) for connecting the winding wire (2) to an external power source, and the terminal (5) is integrated into a resin for forming a cap (6) for air-tightly closing the opening part (1a) by insert molding, with one end (5a) of the terminal (5) being protruded into the case (1) and the other end (5b) of the terminal (5) being protruded out of the case (1).

Abstract: An electromagnetic absorber (10) for a vehicle including (a) a threaded rod (78) which is disposed on one of a sprung portion and an unsprung portion and which has a threaded groove (76) formed in its outer circumferential portion and an axial groove (90) extending in its axis direction (b) a nut (80) which is rotatably disposed on the other of the sprung portion and the unsprung portion and which is screwed with the threaded rod and (c) a rod-rotation inhibiting member (82) which includes a fitting portion configured to be fitted in the axial groove and which is disposed on the other of the sprung portion and the unsprung portion, the rod-rotation inhibiting member being configured to inhibit the threaded rod from rotating while permitting the threaded rod to move in the axis direction.

Abstract: It is an object of the invention to improve the utility of an electromagnetic absorber system which is disposed in a suspension system of a vehicle and which generates a damping force by a generation force of a motor. The electromagnetic absorber system 18 is equipped with high-speed-motion responding means, thereby obviating an insufficiency of the damping force and a deterioration of the controllability in a high-speed stroke motion. More specifically, a hydraulic absorber 64 is provided in combination with the electromagnetic absorber system such that the hydraulic absorber 64 operates in the high-speed motion in which an electromotive force of the motor 68 exceeds a power source voltage Further, two motors having mutually different T-N characteristics are provided, and the two motors are selectively operated depending upon a stroke speed.

Abstract: A suspension device S interposed between a sprung member B and an unsprung member W of a vehicle, comprising an actuator A, a hydraulic damper D, and a direction changing mechanism T for changing a linear motion of the actuator A into a linear motion in an opposite direction and transmitting the opposite linear motion to the hydraulic damper D. When a high-frequency vibration acts on the unsprung member, the drawback that the vibration is apt to be transmitted to the sprung member B under the influence of moment of inertia of the actuator A is remedied and it is possible to improve the ride comfort in the vehicle.

Abstract: A suspension device (A) comprising a damper (S) and a gas spring (C), the damper (S) comprising a motion transforming mechanism (H) for transforming a relative motion between a vehicle body-side member and an axle-side member into a rotational motion and a motor (M) having a rotor (8) to which the rotational motion is transmitted, the gas spring (C) being interposed between the vehicle body-side member and the axle-side member, in which the motor (M) comprises a hollow casing (9), a partition wall member (16) which forms a rotor chamber (r) within the casing (9), with the rotor (8) being received within the rotor chamber (r), a cylindrical stator (17) disposed between an outer periphery of the partition wall member (16) and an inner periphery of the casing (9), and the rotor (8) held rotatably by the casing (9) within the rotor chamber (r), and the interior of the rotor chamber (6) is brought into communication with the interior of a gas chamber (R) of the gas spring (C).

Abstract: It is an object of the invention to provide a suspension system configured to execute a control for avoiding a state in which an operation of an electric motor which is a power source of an electromagnetic actuator is kept halted at a certain operational position while the motor is generating a motor force. Where a target rotational position of the motor becomes equal to a specific operational position (e.g., a rotational position at which an electrifying current amount of one phase reaches a peak value), a control for shifting the target rotational position by ?? is executed. Where the rotational position of the motor is kept located at the certain position for a time period longer than a prescribed time, a control for changing the rotational position of the motor is executed. According to the present suspension system, it is possible to suppress imbalance in heat generation in the motor and to thereby reduce a load to be applied to the motor. Accordingly, a suspension system with high utility is realized.